Gauze weaving loom



5m 4 1946. mwu V 0 GAUZE WEAVING LOOM Filed July 16, 1945 3 Sheets-Sheet l June 4, 1946. MBANYA] GAUZE WEAVING. LOOM Filed July 16, 19 45 3 Sheets-Sheet 2 MAu Us BANYAI may:

June 4, 1946. M. BANYAI GAUZE WEAVING LOOM Filed July 16, 1943 5 Sheets-Sheet s Patented June 4, 1946 GAUZE WEAVING LOOM Maurus Banyai, Glasgow, Scotland, assignor to M. Banyai Limited, Glasgow, Scotland, a corporation of Great Britain Application July 16, 1943, Serial No. 494,950 In Great Britain June 5, 1942 2 Claims.

This invention relates to improvements in warp-shedding mechanism for looms for use in weaving semi-gauze fabrics.

Warp-shedding mechanism according to the invention includes an assembly of plate or like members arranged in closely spaced relation in a row for joint angular movement about a common axis and each formed with two apertures adapted for penetration each by a warp thread.

For the purpose of Weaving a semi-gauze fabric each plate or the like is provided with one eye and with an elongated slot, and a warp is led through the eye and another warp is led through the slot, so that, when the plate assembly is partially rotated through an angle of something less than one hundred and eighty degrees, the warps passing through the eyes are raised and lowered to form a shed for passage of a Weft-carrying shuttle, and the warps passing through the slots merely slide from end to end of the slots.

Warp-shedding mechanism according to the invention is illustrated diagrammatically in the accompanying drawings in which Fig. l is a part side elevation part transverse vertical section of mechanism embodying the invention, Figs. la and 1b are views similar to Fig. 1 but showing the mechanism in different positions of its operation, and Fig. 2 is a fragmentary sectional view of a semi-gauze fabric.

The warps or the Weft or the warps and wefts may consist of textile or like threads or yarns, or of metallic wires.

The construction shown in Figs. 1, 1a and 1b is adapted for weaving semi-gauze fabrics and consists of a plurality of plates Illa strung On a common oscillatory shaft 49 and each provided with an eye aperture 50 penetrated by a warp thread and with an elongated slot 52 penetrated by a warp thread 51a. The eye aperture 50 is positioned outward of the slot 52 and between it and the adjacent edge of the plate. When the plate assembly is oscillated through an angle of the order of one hundred and fortyfive degrees, say, the warps 5| are alternately raised and lowered. The raised warps form a shed 53 for passage of a thread-carrying shuttle 54. The warps 5la merely slide within the slots 52 of the plates. The plate assembly is oscillated by a driven rotary cam 55 engaged by a follower 56 on a rock lever 51. A link 58 connects the lever 51 with a gear segment 59 which meshes with a gear segment 60 carried by the shaft 49.

6| denotes a warp-tensioning rock lever pivoted at 62 on the gable 63 of the loom to rock about an axis parallel to the common axis of the plates 2 and actuated by an eccentric S4, strap 65, and rod 66, from the crankshaft 6! of the loom. The lever 6| is provided with warp-guiding rods 68, 69.

On the change of shed the warp thread 5| is maintained at about the same tension, and the warp thread 5|a is brought to about midway of the height of the shed without healds being required for this purpose.

The tensioning lever 6| answers these requirements by reason that it gives slack to the warps by the movement of the guide rod 68 and at the same time by means of the rod 69 takes up the slack.

Fig. 2 is a section of a portion of semi-gauze fabric.

What is claimed is:

1. In a warp-shedding mechanism for a semigauze weaving loom including an assembly of registering plate-like members arranged in closely spaced relation in a row for joint angular movement about a common axis, in which each of the plate-like members is formed with two apertures, each adapted for penetration by a warp extending across the respective member transversely of the axis of the members, with one of the apertures being in the form of a warp-guiding eye and the other aperture being in the form of an elongated slot, tension means for the warps including a rock-lever rockable about an axis parallel with the common axis of the plate-like members, two warp-engaging guide rods mounted on said rocklever, said guide rods being spaced from each other and each spaced from the pivoted axis of the rock-lever, and means for actuating said rocklever in synchronism with the movement with the plate-like members, said warp-engaging guide rods being so positioned on the rock-lever, and the movement of the rock-lever being so synchronized with the movement of the plate-like members that on a change of shed, one warp-engaging guide rod moves in a direction to give slack to the warp, while the other warp-engaging guide rod moves in a direction to take up slack of the warp.

2. In warp-shedding mechanism for a semigauze weaving loom including an oscillatory shaft, an assembly of registering plate-like members arranged in. closely spaced relation in a row for joint oscillatory movement with said shaft, in which each of the plate-like members is. formed with two apertures, each adapted for penetration by a warp extending across the respective member transversely of the axis of the shaft, one of the apertures being in the form of a warp-guiding eye and the other aperture being in the form of an elongated slot, tension means for the warps including a rock-lever rockable about an axis paralel with the axis of the shaft, two warp-engaging guide rods mounted on said rock-lever, said guide rods being spaced from each other and each spaced from the pivot axis of the rock-lever, and means for actuating said rock-lever in synchronism with the movement with the plate-like members, said warp-engaging guide rods being so 4 positioned on the rock-lever, and the movement of the rock-lever being so synchronized with the movement of the plate-like members that on a change of shed, one warp-engaging guide rod moves in a, direction to give slack to the warp, while the other warp-engaging guide rod moves in a direction to take up slack of thewarp.

- MAURUS BANYAI. 

